kib 77766ce03f Do not drop vm_map lock between doing vm_map_remove() and vm_map_insert().
For this, introduce vm_map_fixed() that does that for MAP_FIXED case.

Dropping the lock allowed for parallel thread to occupy the freed space.

Reported by:	Tijl Coosemans <tijl ulyssis org>
Reviewed by:	alc
Approved by:	re (kensmith)
MFC after:	2 weeks
2007-08-20 12:05:45 +00:00
..
2007-04-19 04:52:47 +00:00